Nutriculture system

Abstract

A problem to be solved by the present invention is to obtain a nutriculture system that can manage a growth environment of a plant in accordance with the state of the plant, to thereby produce good quality vegetables and fruits with low production costs. The nutriculture system (100) of the present invention is a nutriculture system for cultivating plants (10) using a nutrient solution (L). The nutriculture system comprises: a growth section (110) configured for growing the plants; a nutrient solution tank (131) configured for containing the nutrient solution; a measurement section (140) configured for measuring the concentration of at least one of a plurality of ions contained in the nutrient solution; and a control section configured for controlling the growth environment of the nutriculture system based on change in a measured value of the ion concentration.

1 . A nutriculture system for cultivating plants by utilizing a nutrient solution, comprising:
 a growth section configured for growing the plant;   a nutrient solution tank configured for containing the nutrient solution;   a measurement section configured for measuring the concentration of at least one ion contained in the nutrient solution;   a control section configured for controlling growth environment of the nutriculture system based on a change in a measured value of the ion concentration; and   a supply unit configured for supplying the ions to the nutrient solution tank.   
     
     
         2 . The nutriculture system according to  claim 1 , wherein
 the growth environment is selected from a concentration of the ions supplied by the supply unit, an amount of light irradiated to the plants, a temperature, an air speed, an air volume, and a humidity.   
     
     
         3 . The nutriculture system according to  claim 1 , wherein
 the control section controls an environment forming unit and/or the supply unit based on the measured amount or rate of change of concentration of the at least one ion over a prescribed period.   
     
     
         4 . The nutriculture system according to  claim 1 , wherein
 the at least one ion is a phosphorus ion.   
     
     
         5 . The nutriculture system according to  claim 1 , wherein
 the at least one ion further comprises at least one of potassium ions, nitrogen ions, calcium ions, magnesium ions, iron ions, sodium ions, chloride ions, tin ions and molybdenum ions.   
     
     
         6 . The nutriculture system according to  claim 1 , wherein
 the prescribed period is 10 minutes, 30 minutes, 1 hour, 2 hours, or 1 day.   
     
     
         7 . The nutriculture system according to  claim 1 , wherein
 the measurement section comprises:   a measurement tank configured for containing the nutrient solution taken out of the nutrient solution tank; and   one or more ion selective electrodes arranged in the measurement tank and configured for respectively reacting with the at least one ion.   
     
     
         8 . The nutriculture system according to  claim 7 , wherein
 all or part of the nutrient solution contained in the measurement tank is not returned to the nutrient solution tank, but is discarded.   
     
     
         9 . The nutriculture system according to  claim 6 , wherein
 a measurement tank is provided separately for each of the at least one ion to be measured.   
     
     
         10 . The nutriculture system according to  claim 6 , wherein
 the at least one ion selective electrode comprises at least zinc phosphate selectively reacting with the phosphorus ions contained in the nutrient solution.   
     
     
         11 . The nutriculture system according to  claim 6 , wherein
 the at least one ion selective electrode is a cartridge.   
     
     
         12 . The nutriculture system according to  claim 1 , wherein
 the supply unit is provided with at least one supply tank separately containing the at least one ion.   
     
     
         13 . The nutriculture system according to  claim 1 , wherein
 the system further comprises a circulation section configured for circulating the nutrient solution between the plant and the nutrient solution tank.   
     
     
         14 . The nutriculture system according to  claim 12 , wherein
 the at least one supply tank is a cartridge.   
     
     
         15 . A manufacturing method for cultivating plants by a nutrient solution, characterized by comprising:
 a process for cultivating the plants using the nutriculture system according to  claim 1 .